/*
 * Original Author -> 杨海健 (taketoday@foxmail.com) https://taketoday.cn
 * Copyright © TODAY & 2017 - 2021 All Rights Reserved.
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see [http://www.gnu.org/licenses/]
 */

package cn.taketoday.web.socket;

import cn.taketoday.web.RequestContext;
import cn.taketoday.web.handler.AbstractHandlerAdapter;
import cn.taketoday.web.handler.HandlerAdapter;

/**
 * @author TODAY 2021/4/5 14:04
 * @since 3.0
 */
public abstract class AbstractWebSocketHandlerAdapter extends AbstractHandlerAdapter implements HandlerAdapter {

  @Override
  public boolean supports(final Object handler) {
    return handler instanceof WebSocketHandler;
  }

  @Override
  public Object handle(final RequestContext context, final Object handler) throws Throwable {
    return handleInternal(context, (WebSocketHandler) handler);
  }

  protected Object handleInternal(RequestContext context, WebSocketHandler handler) throws Throwable {
    WebSocketSession session = createSession(context, handler);
    upgrade(context, session, handler);
    return NONE_RETURN_VALUE;
  }

  protected abstract WebSocketSession createSession(RequestContext context, WebSocketHandler handler);

  protected void upgrade(
          RequestContext context, WebSocketSession session, WebSocketHandler handler) throws HandshakeFailedException {
  }

}
